issue-174: new POJO to configure META-INF patterns
issue-174: use new MetaInfo pojo for configuration
issue-174: ConfigHandler should set NULL value if no method specified
for non required parameters
issue-174: added helper methods for tests to MetaInf
issue-174: added MetaInf configuration to UnpackMojo
issue-174: added tests for UnpackMojo
issue-174: one more assertion
issue-174: restored from master
issue-174: restored spacing
issue-174: restored spacing